Forecast on Shanghai's Input-Intensity of R&D Based on the Model DGM (1, 1)

According to the statistical data of R&D input-intensity from 1995 to 2007 in Shanghai, the paper forecasts the medium-term and long-term R&D input-intensity in Shanghai based on a kind of improving form of grey forecasting model GM(1,1), that is DGM(1,1) model. The calculation results show that DGM (1, 1) model has some advantages, so as higher predicting precision, the better fitting with actual situation and so on. The construction and application of the model have a positive reference value to Shanghai's future strategic decision-making in science and technology investment.